Thermostat



FIG. 1 is a perspective front view from above right;

FIG. 2 is a perspective rear view from above left, all structure visible within the outer rear edge being disclaimed;

FIG. 3 is a rear elevational view, again all structure visible within the rear edge being disclaimed;

FIG. 4 is a front elevational view;

FIG. 5 is a left-side elevational view; and,

FIG. 6 is a right-side elevational view. 

CLAIM The ornamental design for a thermostat, as shown and described. 